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Hi Mike
With a panhard rod you get slight movement side to side when using air ride due to the amount of travel, so for instance, when all the way down you'd probably have the L/H rear wheel touching the inner wheel arch, and the R/H rear wheel about 5,6 or 7mm away from its respective wheel arch.

After speaking to the guy, he suggested a watts link, which when thinking about it makes perfect sense and actually less complicated than a 4 link set up (especially the way he has mounted the whole thing in the CAD drawings). I will put the CAD drawings on here at some point but need to see if he wants to Patent it before i do so.

Hope this helps

Mine doesn't move even a mm and is panhard. I just moved the mount and it's perfect
Had to re design the piece of crap that airride.co.uk sent me that would have killed me and my kids

Loving the copper air hoses, They look so much nicer than the push fit plastic ones.

Panhard rods on race cars make sense as the suspension travel will be less than an inch if its set up properly. Because the nature of air ride is to travel 5 or 6 inches (depending on make), that 'up and down' movement tranfers into a small sideways movement due to the arc a panhard rod makes on its travel. So your set up will move slightly sideways, its physics, but its probably not a noticable amount.

Eventually my plan is to run tyres as close to the arches as possible, to within a mm of each tyre touching the arches, hence why i want to eliminate any sideways movement at all at this part of the build.

Thanks, the copper ones are only being used at the rear, I'm still going to use the plastic hoses to feed the fronts for now, i might change that at some point though.

so, after a lot of messing about, its finally done. All the rear end is on, all the teething problems sorted out and everything works. Just finished the last video which covers the rear suspension and running the airlift performance system for the first time.https://youtu.be/IENZ6xhqxTk

All looks a fairly simple system.
One question though. The part that the bag bolts onto, how does that lot bolt onto the chassis?

It uses a peice of Delrin machined to the shape of the inside of the chassis rail to take up the space. Then 2 bolts pass through. and at the front of those plates, there is one bolt that slides into the place where the bump stop is normally mounted. I show it as best i can in the video.